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From: Herbert Xu <herbert@gondor.apana.org.au>
To: Christian Kujau <lists@nerdbynature.de>, Chr <chunkeey@web.de>,
	Milan Broz <mbroz@redhat.com>, David Chinner <dgc@sgi.com>,
	LKML <linux-kernel@vger.kernel.org>,
	xfs@oss.sgi.com, dm-devel@redhat.com, dm-crypt@saout.de,
	Ritesh Raj Sarraf <rrs@researchut.com>
Subject: Re: [dm-crypt] INFO: task mount:11202 blocked for more than 120 seconds
Date: Tue, 18 Mar 2008 08:56:53 +0800	[thread overview]
Message-ID: <20080318005653.GA14575@gondor.apana.org.au> (raw)
In-Reply-To: <20080317173609.GD29322@agk.fab.redhat.com>

On Mon, Mar 17, 2008 at 05:36:09PM +0000, Alasdair G Kergon wrote:
> Latest version for everyone to try:
> 
> From: Milan Broz <mbroz@redhat.com>
> 
> Fix regression in dm-crypt introduced in commit
> 3a7f6c990ad04e6f576a159876c602d14d6f7fef
> (dm crypt: use async crypto).
> 
> If write requests need to be split into pieces, the code must not
> process them in parallel because the crypto context cannot be shared.
> So there can be parallel crypto operations on one part of the write,
> but only one write bio can be processed at a time.

Could you explain this part please? Crypto tfm objects are meant
to be reentrant, synchronous or not.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

  parent reply	other threads:[~2008-03-18  0:57 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-07 20:32 Christian Kujau
2008-03-07 22:40 ` David Chinner
2008-03-07 23:46   ` Christian Kujau
2008-03-08  1:54     ` Christian Kujau
2008-03-09  6:15       ` 2.6.25-rc hangs (was: INFO: task mount:11202 blocked for more than 120 seconds) Christian Kujau
2008-03-09 16:44         ` 2.6.25-rc hangs Eric Sandeen
2008-03-09 18:05           ` Christian Kujau
     [not found]             ` <47D42AD6.10500@sandeen.net>
2008-03-09 18:49               ` Christian Kujau
2008-03-12 18:06                 ` Samuel Tardieu
2008-03-12 21:02                   ` Christian Kujau
2008-03-09 21:34     ` INFO: task mount:11202 blocked for more than 120 seconds David Chinner
2008-03-10  1:46       ` Christian Kujau
2008-03-12 18:03       ` Samuel Tardieu
2008-03-12 19:53         ` Chr
2008-03-12 23:07           ` Christian Kujau
2008-03-13 13:45             ` Christian Kujau
2008-03-13 21:33               ` Chr
2008-03-13 21:54                 ` Christian Kujau
2008-03-14  0:15                   ` Chr
2008-03-14  9:27       ` Milan Broz
2008-03-14 23:58         ` Christian Kujau
2008-03-16 20:33           ` David Chinner
2008-03-15  0:08         ` Chr
2008-03-15 13:32           ` [dm-crypt] " Chr
2008-03-15 21:34             ` Chr
2008-03-16 13:08               ` Christian Kujau
2008-03-17 17:36                 ` Alasdair G Kergon
2008-03-17 18:36                   ` Chr
2008-03-18 17:46                     ` Christian Kujau
2008-03-18  0:56                   ` Herbert Xu [this message]
2008-03-18  4:07                     ` Milan Broz
2008-03-22  2:52                   ` Christian Kujau
2008-03-27  8:21                     ` Christian Kujau
2008-03-26 16:57                   ` Chr

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